scripts: fix CAMEO tag generator
What should have been only cosmetic changes, ended up in breaking the
script. Rename UIMAGE_CRC_SLICE back to (the original) UIMAGE_CRC_OFF.
Fixes issue #10204 "cameo-tag.py broken"
Reported-by: Markus Stockhausen <[email protected]>
Fixes: f9e840b65700 ("scripts: add CAMEO tag generator")
Signed-off-by: Sander Vanheule <[email protected]>